Guesstimates
The Guesstimate Library
Classic estimation questions from real consulting interviews. Attempt each one before revealing our worked issue tree, calculation table and sanity check — that's the whole point.
Easy Accenture
Cups of Tea Consumed in Delhi in One Day
Market Sizing
Moderate Bain
Estimate the number of credit cards in India
Market Sizing
Moderate Bain
Swiggy Orders in Delhi in a Day
Market Sizing
Challenging Accenture
Ola and Uber Cabs Running Daily in Delhi NCR
Physical Estimation
Moderate Accenture
Flights Taking Off from Delhi Airport in a Day
Physical Estimation
Moderate Bain
Annual Revenue of a Salon in a Metro City
Revenue Estimation
Challenging McKinsey
Number of Petrol Pumps in India
Physical Estimation
Moderate
Weddings in India on a Single December Saturday
Physical Estimation
Moderate
Daily Chai Consumption of India (in Cups)
Market Sizing
Easy
Smartphones Sold in India Every Minute
Market Sizing
Challenging RedSeer
Estimate the market size of online food delivery in India
Market Size (₹)
Moderate
Estimate the number of ATMs needed for a city of 2 million people
Physical Estimation
Moderate
Estimate the number of movie tickets sold in India on a Friday
Market Sizing
Easy
Estimate the number of red cars in Delhi
Physical Estimation
Challenging
Estimate the number of wine bottles sold in India in a year
Market Sizing
Easy BCG
Estimate the amount of paint required to paint a car
Physical Estimation
Moderate Bain
Estimate the number of Bollywood movies released in a year
Market Sizing
Moderate
Estimate the number of pens bought in India every day
Market Sizing
Moderate
Estimate the number of Spotify Premium subscribers in India
Market Sizing
Challenging
Estimate the number of EV charging stations India will need by 2030
Physical Estimation
Moderate
Hospital Beds in India
Physical Estimation
Challenging
Estimate the number of cricket bats sold in India every year
Market Sizing
Easy
Maggi Packets Eaten in Indian Hostels Daily
Physical Estimation
Challenging RedSeer
Quick Commerce Market Size in India
Market Size (₹)
Challenging
CAT Coaching Market Size in India
Market Size (₹)